{{#if vmfMap}}
    {{#each vmfMap}}
    <optgroup label="特征#{{@key}}">
		  {{#each this}}
		      <option value="{{id}}" data-category="{{categoryNumber}}">
                  <span class="cate-num">{{categoryNumber}}:</span>
                  {{name}}</option>
          {{/each}}
    </optgroup>
    {{/each}}
{{else}}
    <option disabled>未找到相关特征</option>
{{/if}}